Malicious PDF — malware analysis report

Static analysis result for SHA-256 9adfdda70f7dbec8…

MALICIOUS

PDF

32.8 KB Created: 2020-11-03 03:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-20
MD5: d4cad0d81c53612b73e4f67714eab6dc SHA-1: 4eac4f173dac1f84c8997e0cfa9ed0a7afbe8dc8 SHA-256: 9adfdda70f7dbec8da848dc40a108f853ab57600666f3e652a1cf4243e676a48
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/wb?keyword=nusenda%20unser%20rio%20rancho In PDF document text
    • https://s3.amazonaws.com/gezetega/tamil_tongue_twister_download.pdfIn PDF document text
    • https://mijelowiwiloz.weebly.com/uploads/1/3/1/1/131163856/cabb787.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/cambridge_english_proficiency_cpe.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/1a9e72.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/analogies_test.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/nefovidikepolagojaroxe.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/changing_to_word_online.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rugatu-rugot.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004332.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004332.bin)
    • https://uploads.strikinglycdn.com/files/b88b7d06-dc2f-4a42-8878-e1bf49b05503/mutadunotikomeguxonuxijog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58c98952-fd73-4bd8-a2e2-a76515b3784f/x-linked_pedigree_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cb389ef-25ba-4c1d-9d05-88e7160ca59b/23798513491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc99ed6e-07d9-42a3-be34-47e26fe49a6c/37714219444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5da25f99-808f-4aef-a05a-08f194b16879/21712322331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2e75815-ec92-42fd-8e81-f87f67f64af2/lalob.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00004332.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4332 4964 bytes
SHA-256: 3f4b447ef02d527c008f2ce91d696297bc8e2e1d3b911f76af8197581b4418d6
font_01_sfnt_off0000540d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x540D 10156 bytes
SHA-256: b2e9fd98f825d10324200d37d2d4529ce86feee46c68207ee186f65d339414ce

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